I'm at Terminal 4 in Phoenix international airport, Arizona. I captured the screen of the Fitbit app, the screen of the Samsung Galaxy S25U, and started walking toward my gate. When arrived, I captured both screens again. The Fitbit app reported 1,078 steps. The Samsung Health app reported 1,087 steps. That 9 steps difference, or 0.008%. I'm going to believe the Fitbit. In the past, I counted 200 steps while walking and the Fitbit was right on the money. This is the first time I have compared two different devices.
(Inspire 3 with the latest update.)
Moderator edit - updated subject for clarity
